/* ===== CSS Variables ===== */
:root {
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-card: #16213e;
    --bg-card-hover: #1e2d4d;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #6b6b7b;
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --border-color: rgba(255, 255, 255, 0.1);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Reset & Base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.app-container {
    display: flex;
    min-height: 100vh;
}

/* ===== Sidebar ===== */
.sidebar {
    width: 260px;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-card) 100%);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    font-size: 32px;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    flex: 1;
    padding: 16px 12px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    margin-bottom: 4px;
}

.nav-item:hover {
    background: var(--glass-bg);
    color: var(--text-primary);
}

.nav-item.active {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.nav-icon {
    font-size: 20px;
}

.nav-text {
    font-weight: 500;
}

.sidebar-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
}

.time-display {
    font-size: 14px;
    color: var(--text-muted);
    text-align: center;
}

/* ===== Main Content ===== */
.main-content {
    flex: 1;
    margin-left: 260px;
    padding: 24px 32px;
    min-height: 100vh;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.page-title {
    font-size: 28px;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== Tab Content ===== */
.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Stats Grid ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    font-size: 40px;
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: var(--glass-bg);
}

.stat-today .stat-icon {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(16, 185, 129, 0.1));
}

.stat-week .stat-icon {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(99, 102, 241, 0.1));
}

.stat-month .stat-icon {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.2), rgba(139, 92, 246, 0.1));
}

.stat-customers .stat-icon {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), rgba(245, 158, 11, 0.1));
}

.stat-info {
    flex: 1;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
}

.stat-today .stat-value {
    color: var(--success);
}

.stat-week .stat-value {
    color: var(--accent-primary);
}

.stat-month .stat-value {
    color: var(--accent-secondary);
}

.stat-customers .stat-value {
    color: var(--warning);
}

.stat-sub {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ===== Charts Grid ===== */
.charts-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
    margin-bottom: 24px;
}

@media (max-width: 1200px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }
}

.chart-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.chart-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.chart-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.chart-body {
    padding: 20px;
    min-height: 250px;
}

/* ===== Top Customers ===== */
.top-customers-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.top-customer-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--glass-bg);
    border-radius: var(--radius-md);
    transition: var(--transition);
    cursor: pointer;
}

.top-customer-item:hover {
    background: var(--bg-card-hover);
}

.rank-badge {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 12px;
}

.rank-badge.rank-1 {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    color: #1a1a2e;
}

.rank-badge.rank-2 {
    background: linear-gradient(135deg, #94a3b8, #64748b);
    color: white;
}

.rank-badge.rank-3 {
    background: linear-gradient(135deg, #d97706, #b45309);
    color: white;
}

.customer-rank-info {
    flex: 1;
}

.customer-rank-name {
    font-weight: 500;
    color: var(--text-primary);
}

.customer-rank-count {
    font-size: 12px;
    color: var(--text-muted);
}

.customer-rank-amount {
    font-weight: 600;
    color: var(--success);
}

/* ===== Comparison Card ===== */
.comparison-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.comparison-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.comparison-header h3 {
    font-size: 16px;
    font-weight: 600;
}

.comparison-body {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    padding: 20px;
}

.comparison-item {
    text-align: center;
}

.comparison-label {
    display: block;
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.comparison-value {
    font-size: 24px;
    font-weight: 700;
}

.comparison-value.expected {
    color: var(--accent-primary);
}

.comparison-value.actual {
    color: var(--success);
}

.comparison-value.diff {
    color: var(--warning);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
}

.btn-success {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
}

.btn-danger {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
}

.btn-sm {
    padding: 8px 14px;
    font-size: 13px;
}

/* ===== Groups Grid ===== */
.groups-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 20px;
}

.group-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 20px;
    transition: var(--transition);
}

.group-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-secondary);
}

.group-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.group-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.group-rates {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    padding: 16px 0;
    border-top: 1px solid var(--border-color);
}

.group-rounds {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    padding: 12px 0;
    border-top: 1px solid var(--border-color);
}

.rounds-item {
    text-align: center;
}

.rounds-label {
    font-size: 11px;
    color: var(--text-muted);
    display: block;
    margin-bottom: 2px;
}

.rounds-value {
    font-size: 14px;
    font-weight: 600;
    color: var(--warning);
}

/* ===== Customers Grid ===== */
.customers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
}

.customer-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 20px;
    transition: var(--transition);
}

.customer-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-primary);
}

.customer-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
}

.customer-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.customer-phone {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
}

.customer-group-tag {
    display: inline-block;
    padding: 4px 10px;
    background: var(--accent-gradient);
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    margin-top: 6px;
}

.customer-actions {
    display: flex;
    gap: 8px;
}

.action-btn {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--glass-bg);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.action-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.action-btn.delete:hover {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

.customer-rates {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    padding: 16px 0;
    border-top: 1px solid var(--border-color);
}

.rate-item {
    text-align: center;
}

.rate-label {
    font-size: 12px;
    color: var(--text-muted);
    display: block;
    margin-bottom: 4px;
}

.rate-value {
    font-size: 16px;
    font-weight: 600;
    color: var(--accent-primary);
}

.customer-balance {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
    padding: 8px 12px;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15), rgba(16, 185, 129, 0.05));
    border-radius: var(--radius-sm);
}

.balance-icon {
    font-size: 18px;
}

.balance-amount {
    font-weight: 700;
    color: var(--success);
    font-size: 16px;
}

.customer-notes {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
    font-size: 13px;
    color: var(--text-secondary);
}

.customer-footer {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: center;
    gap: 8px;
}

/* ===== Balance Conversion ===== */
.balance-conversion {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-md);
    padding: 12px;
    margin-top: 12px;
}

.conversion-title {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 8px;
    text-align: center;
}

.conversion-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.conversion-item {
    text-align: center;
    padding: 8px;
    background: var(--glass-bg);
    border-radius: var(--radius-sm);
}

.conversion-mode {
    font-size: 11px;
    color: var(--text-muted);
    display: block;
}

.conversion-hours {
    font-size: 16px;
    font-weight: 700;
    color: var(--accent-primary);
}

/* ===== Filter Bar ===== */
.filter-bar {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.filter-select {
    padding: 10px 16px;
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 14px;
    min-width: 150px;
    cursor: pointer;
    transition: var(--transition);
}

.filter-select:hover {
    border-color: var(--accent-primary);
}

.filter-select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.filter-select option {
    background: #1a1a2e;
    color: #ffffff;
}

/* ===== Transactions List ===== */
.transactions-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.transaction-item {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 16px 20px;
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr auto;
    gap: 16px;
    align-items: center;
    transition: var(--transition);
}

.transaction-item:hover {
    border-color: var(--accent-primary);
}

@media (max-width: 1000px) {
    .transaction-item {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
}

.tx-customer {
    font-weight: 600;
    color: var(--text-primary);
}

.tx-mode {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    text-align: center;
}

.tx-mode.secret {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(99, 102, 241, 0.1));
    color: var(--accent-primary);
}

.tx-mode.top_secret {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.2), rgba(139, 92, 246, 0.1));
    color: var(--accent-secondary);
}

.tx-mode.prison {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.2), rgba(239, 68, 68, 0.1));
    color: var(--danger);
}

.tx-time {
    font-size: 13px;
    color: var(--text-secondary);
}

.tx-duration {
    font-size: 14px;
    color: var(--text-muted);
}

.tx-amounts {
    text-align: right;
}

.tx-expected {
    font-size: 12px;
    color: var(--text-muted);
}

.tx-actual {
    font-size: 18px;
    font-weight: 700;
    color: var(--success);
}

.tx-actions {
    display: flex;
    gap: 8px;
}

/* ===== Modal ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
    animation: fadeIn 0.2s ease;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.3s ease;
}

.modal-lg {
    max-width: 720px;
}

.modal-sm {
    max-width: 400px;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 20px;
    font-weight: 600;
}

.modal-close {
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 50%;
    background: var(--glass-bg);
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.modal-close:hover {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 20px 24px;
    border-top: 1px solid var(--border-color);
}

/* ===== Forms ===== */
form {
    padding: 24px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23a0a0b0' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.form-group select option {
    background: #1a1a2e;
    color: #ffffff;
    padding: 12px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-divider {
    margin: 24px 0 16px;
    padding: 12px 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.form-divider span {
    background: var(--bg-secondary);
    padding: 0 16px;
    color: var(--text-secondary);
    font-size: 14px;
}

.rates-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.input-with-unit {
    display: flex;
    align-items: center;
}

.input-with-unit input {
    border-radius: var(--radius-md) 0 0 var(--radius-md);
    flex: 1;
}

.input-with-unit .unit {
    padding: 12px 14px;
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-left: none;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    color: var(--text-muted);
    font-size: 13px;
    white-space: nowrap;
}

.checkbox-group {
    margin-top: 16px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-secondary);
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-primary);
    cursor: pointer;
}

/* ===== Rate Display ===== */
.rate-display {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    margin-bottom: 16px;
}

.rate-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4px;
}

/* ===== Customer Balance Info ===== */
.customer-balance-info {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(16, 185, 129, 0.05));
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    margin-bottom: 16px;
}

.balance-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.balance-label {
    color: var(--text-secondary);
    font-size: 14px;
}

.balance-value {
    font-weight: 700;
    color: var(--success);
    font-size: 18px;
}

/* ===== Calculation Display ===== */
.calculation-display {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(16, 185, 129, 0.05));
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-bottom: 16px;
}

.calc-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 4px 0;
}

.calc-row.highlight {
    padding-top: 12px;
    margin-top: 8px;
    border-top: 1px dashed rgba(16, 185, 129, 0.3);
}

.calc-label {
    color: var(--text-secondary);
    font-size: 14px;
}

.calc-value {
    font-weight: 600;
    color: var(--text-primary);
}

.calc-row.highlight .calc-value {
    font-size: 20px;
    color: var(--success);
}

.highlight-value {
    color: var(--warning) !important;
    font-weight: 700;
}

/* ===== Empty State ===== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-icon {
    font-size: 48px;
    display: block;
    margin-bottom: 16px;
    opacity: 0.5;
}

/* ===== Customer Detail Modal ===== */
.detail-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 24px;
}

.detail-info h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

.detail-info p {
    color: var(--text-secondary);
    margin-top: 4px;
}

.detail-summary {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.summary-item {
    background: var(--glass-bg);
    border-radius: var(--radius-md);
    padding: 16px;
    text-align: center;
}

.summary-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.summary-value {
    font-size: 20px;
    font-weight: 700;
    color: var(--accent-primary);
}

.detail-section {
    margin-top: 24px;
}

.detail-section h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.mode-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.mode-stat {
    background: var(--glass-bg);
    border-radius: var(--radius-md);
    padding: 12px;
    text-align: center;
}

.mode-name {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.mode-amount {
    font-size: 18px;
    font-weight: 600;
    color: var(--success);
}

.mode-count {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--glass-border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .sidebar {
        width: 70px;
    }

    .logo-text,
    .nav-text,
    .time-display {
        display: none;
    }

    .main-content {
        margin-left: 70px;
        padding: 16px;
    }

    .nav-item {
        justify-content: center;
    }

    .rates-grid,
    .form-row {
        grid-template-columns: 1fr;
    }

    .comparison-body {
        grid-template-columns: 1fr;
    }
}